TY  - BOOK
AU  - Ritchhart,Ron
TI  - Through mathematical eyes: exploring relationships in math and science 
SN  - 043507217X (pbk. : acid-free paper)
AV  - QA 331.3 .T48 1997
PY  - 1997///
CY  - Portsmouth, NH
PB  - Heinemann
KW  - Functions
KW  - Study and teaching (Middle school)
ER  -